A lot of time is spent making do with equipment. As time passes things generally start to fail.
All failures are not catastrophic. Sometimes failures can be subtle and things just don’t work as well as thei aught to.
My dishwasher (and hence us) was going through exactly that. Our old dishwasher was going through exactly this. We were going through all of our dishes and pre-washing both before putting them in the dishwasher and after taking them out.
I’m having trouble taking a picture of the differences but the difference is amazing.
The same glasses that went through before and after were pretty damn striking. One is cloudy and one it clear. (imagine a picture with a cloudy glass) This is with exactly with the same detergent and rinse agent.
I’m happy with the end result. :-)